Table 3.
Fit of measurement model including factor loading, composite reliability (CR), average variance extracted (AVE), and Cronbach alpha of endogenous constructs for the final model in the subsample of users of PRWs (n=254) and the subsample of nonusers of PRWs (n=689).
| Composite and itema | Mean (SD) | Loading | AVE | CR | Cronbach alpha | ||||||
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Users | Nonusers | Users | Nonusers | Users | Nonusers | Users | Nonusers | Users | Nonusers | |
| PEOU |
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F11_1 | 6.45 (0.95) | 6.21 (1.20) | 0.94 | 0.95 | 0.90 | 0.90 | 0.95 | 0.95 | .90 | .89 |
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F11_2 | 6.36 (0.91) | 6.07 (1.23) | 0.96 | 0.95 |
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| PU |
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|
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F11_11 | 4.48 (1.88) | 4.32 (2.01) | 0.81 | 0.86 | 0.71 | 0.75 | 0.88 | 0.90 | .80 | .83 |
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F11_12 | 4.21 (1.96) | 4.06 (1.99) | 0.87 | 0.88 |
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F11_15 | 4.03 (1.85) | 3.78 (1.98) | 0.85 | 0.84 |
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| Age (S2_1) | 42.39 (12.92) | 44.37 (13.00) | 1.00 | 1.00 | — | — | — | — | — | — | |
| Gender (D1) | — | — | 1.00 | 1.00 | — | — | — | — | — | — | |
| Digital literacy (F2_1) | 6.09 (0.95) | 5.78 (1.09) | 1.00 | 1.00 | — | — | — | — | — | — | |
| Feelings about the Internet (F1_1) | 5.97 (1.01) | 5.73 (1.12) | 1.00 | 1.00 | — | — | — | — | — | — | |
| Value of health-related knowledgeability |
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F20_5 | 5.07 (1.57) | 4.58 (1.74) | 0.72 | 0.79 | 0.71 | 0.74 | 0.88 | 0.90 | .80 | .82 |
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F20_8 | 3.76 (1.87) | 3.21 (1.88) | 0.90 | 0.88 |
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F20_9 | 4.01 (1.93) | 3.45 (1.92) | 0.89 | 0.90 |
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| Daily private Internet use (F3_per day) | 3.17 (2.04) | 3.05 (2.36) | 1.00 | 1.00 | — | — | — | — | — | — | |
| Daily private Internet use health (F4_per day) | 0.55 (1.78) | 0.39 (1.44) | 1.00 | 1.00 | — | — | — | — | — | — | |
| Apps use (F7_10recoded) | — | — | 1.00 | 1.00 | — | — | — | — | — | — | |
| Attitude toward PRWs |
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F25_1 | 5.47 (1.44) | 3.71 (1.98) | 0.85 | 0.93 | 0.78 | 0.88 | 0.91 | 0.96 | .86 | .93 |
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F26_1 | 5.24 (1.45) | 3.91 (1.95) | 0.91 | 0.94 |
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F27_1 | 4.43 (1.32) | 3.28 (1.64) | 0.90 | 0.94 |
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a PEOU: perceived ease of use; PU: perceived usefulness. The denomination of measurement variables corresponds to the denomination of the items in Multimedia Appendix 1.